I doubt he had much say in who was drafted while in Oakland. Al Davis ran the draft himself during that time period. Possibly the same thing in Dallas with Jones running things.
To lend some insight, in Dallas he had quite a bit of say in how things went in the war room. The one big pick he wanted but didn't get was JJ Watt-- at the time the Cowboys had more pressing needs on the offensive line and instead took Tyron Smith.
But as far as 2012 goes, it was defensive heavy draft with Ryan's stamp all over it. Reports from inside the war room indicate that Jerry relegated himself to more of a back seat role... that will probably change this year, but at the time Ryan was able to get most of the guys he wanted.